Many studies that cannot ethically be conducted as experiments with typical human participants are possible to test with animal studies.
What is Experiment?This is referred to as a procedure which is used to support or refute a hypothesis and it is also done by other peers in other to ascertain the authenticity of a law or principle.
They are used in medicine to test the efficacy of drugs during production so as to ensure that is very potent. It is also tested to ensure it is safe for consumption and the necessary side effects are studied before they are put in the market.
There are some experiments which can't be done with the use of humans because of ethical and health reasons which is the reason why animals have been used as a form of alternatives because of the identical body system they have with humans.
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how do i mark people brainlest
Answer:
Explanation: If two people had given you an answer to your question, then there is a option to mark ONE of them as brainliest. Click on the option “mark as brainliest” near the answer u like most. If only one person gave a answer then after some time u will receive a notification that u can mark their answer an brainiest. In which u just repeat the step of clicking on “mark as brainiest”
I don’t know why it’s blurry like that but I need help
Answer:
It is Quantitative
Explanation:
Because we're talking about the measurement and it is telling you that the seed is 2mm long. :)
Which factors could cause emphysema?
i. air pollution
ii. genetic predisposition
iii. tobacco smoke
a. i and ii only
b. i and iii only
c. ii and iii only
d. i, ii and iii
The factors that can cause emphysema are air pollution, genetic predisposition and tobacco smoke. The correct option is d.
What is emphysema?Emphysema is a type of lung disease that causes shortness of breath. The air sacs in the lungs (alveoli) are damaged in people with emphysema.
The inner walls of the air sacs weaken and rupture over time, resulting in larger air spaces rather than many small ones.
Emphysema is usually caused by long-term exposure to irritants that damage your lungs and airways.
People who are born with a genetic mutation that causes an alpha-1 antitrypsin deficiency are predisposed to an early form of emphysema as well as liver cirrhosis.
Thus, the correct option is d.
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What three different types of atoms, or elements, are present in monosaccharides?
Like all carbohydrates, a monosaccharide consists of three chemical elements: carbon, hydrogen, and oxygen. It is the simplest type of carbohydrate molecule and often serves as the basis for forming more complex molecules. Monosaccharides include aldoses, ketoses, and their derivatives.
83. a factor x assay has the following results: 1:10 dilution: 50% 1:20 dilution: 77% 1:40 dilution: 127% these results indicate the presence of: a. factor deficiency b. clotted sample c. inhibitor d. bad draw
These results indicate the presence of Inhibitor.
Enzyme inhibitors are substances that alter the enzyme's catalytic capabilities. As a result, they reduce the enzyme's ability to catalyze reactions or, in extreme circumstances, completely halt them. These inhibitors function by obstructing or changing the active site. For instance, lactose is the name of the sugar present in milk.
Active Site- The term "active site" describes the particular area of an enzyme where a substrate attaches and catalysis or a chemical reaction takes place. When an enzyme reacts with a protein, a structural component of the protein controls whether it is functional or not.
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Among deaf people, neurons in the temporal lobe that might normally process auditory stimuli take on new functions. this best illustrates?
Among deaf people, neurons in the temporal lobe that might normally process auditory stimuli take on new functions. This best illustrates plasticity.
Neurons are also called nerve cells. These are the longest cell of the body that functions to relay signals all across the body. The structure if a neuron comprises of a cell body, dendrites, axon and axon terminal.
Plasticity of the brain is its ability to modify or re-build its connections. This is a common functions observed in the brain during its development. The experiences, learning, memory retention, etc. are the activities that aid in the brain plasticity.
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What type of channel opens in response to an action potential arriving at the axon terminal and functions to allow synaptic vesicles to release neurotransmitters?.
Voltage gated Ca2+ channels opens in response to an action potential arriving at the axon terminal and functions to allow synaptic vesicles to release neurotransmitters.
Voltage-gated calcium channels are found in the cell membranes of nerve cells and are responsible for regulating the flow of calcium ions into the cell. These channels open in response to an action potential arriving at the axon terminal, and function to allow synaptic vesicles to release neurotransmitters.
Calcium ions are important for many cellular processes, including muscle contraction, secretion of hormones, and cell signaling. When an action potential reaches the axon terminal, it causes the voltage-gated calcium channels to open, allowing calcium ions to flow into the cell. This influx of calcium ions causes the synaptic vesicles to release their neurotransmitters into the synapse, where they can bind to and activate post-synaptic receptors.
The voltage-gated calcium channels are critical for proper nerve function, and any dysfunction of these channels can lead to serious problems. For example, if the channels do not open properly in response to an action potential, the synaptic vesicles will not be able to release their neurotransmitters, and the nerve cell will be unable to communicate with other cells. This can lead to serious problems, such as paralysis.
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I NEED HELP THIS IS TIMED
Select from the drop-down menus to label the a, b, and c parts of the bony fish.
Answer: WHat are the choices
Explanation:
Explain why the gases came out of the leaf when it was put into warm water
Explanation:
the leaf is using light to uphold photosynthesis when underwater. oxygenating the leaf is one of the steps in this experiment.
you are investigating the bubbles forming in the water which are caused by oxygen .so plants don't breathe using lungs as we humans do they just take in and evict air.
If heavy exercise produces lots of co2 in the body, will the blood become more acid or more basic?.
Answer: Acidic
Explanation: The pH of the blood is normally 7.35 to 7.45 – a narrow range. During exercise, the concentration of carbon dioxide in the blood and respiring tissues increases. This could lower the pH (making the blood more acidic). I hope this helps <3
Practice:organelle identification Complete the table by writing the name of the cell part besides it’s structure/function
The correct matching of the cell organelles and their functions are:
1. Stores material within the cell - vacuole2. Closely stacked, flattened sacs (plants only) - chloroplast /granum3. The sites of protein synthesis - ribosome4. Transports materials within the cell - vesicles5. The region inside the cell except for the nucleus - cytoplasm6. Organelle that manages or controls all the cell functions in a eukaryotic cell - nucleus7. Contains chlorophyll, a green pigment that traps energy from sunlight and gives plants their green color - chloroplast8. Digests excess or worn-out cell parts, food particles and invading viruses or bacteria - lysosome9. Small bumps located on portions of the endoplasmic reticulum - ribosomes10. Provides temporary storage of food, enzymes and waste products - vesicle11. Firm, protective structure that gives the cell its shape inplants, fungi, most bacteria and some protists - cell wall12. Produces a usable form of energy for the cell - mitochondria13. Packages proteins for transport out of the cell - Golgi body14. Everything inside the cell including the nucleus - cytosol15. Site where ribosomes are made - nucleolus16. The membrane surrounding the cell - plasma membrane17. Provides support for the cell, has two “subparts” - Lipid bilayer18. Name for the collection of DNA in the nucleus of eukaryotic cells -Chromosome/chromatinWhat are cell organelles?Cell organelles are specialized structures found within the cells which perform specific functions.
Cells organelles are considered as small organs or mini-organs within cells.
The cell organelles may be classified into:
membrane-bound organelles, andnon-membrane-bound organelles.Some of the cell organelles and their function include:
Mitochondria - produces energy in the form of ATP for the cellNucleus - stores the genetic informationEndoplasmic reticulum - synthesizes proteins and lipidsGolgi apparatus - packaging and distribution of biomolecules.Lysosome - digestion of molecules and foreign materials.Ribosomes - they are the sites of proteni synthesisLearn more about cell organelles at: https://brainly.com/question/25742135
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Note that the complete question is given below:
Complete the following table by writing the name of the cell part or organelle in the right hand column that matches the structure/function in the left hand column. A cell part MAY be used more than once.
Stores material within the cell vacuole
Closely stacked, flattened sacs (plants only) chloroplast /granum
The sites of protein synthesis ribosome
Transports materials within the cell vesicles
The region inside the cell except for the nucleus cytoplasm
Organelle that manages or controls all the cell functions
in a eukaryotic cell nucleus
Contains chlorophyll, a green pigment that traps energy
from sunlight and gives plants their green color chloroplast
Digests excess or worn-out cell parts, food particles and
invading viruses or bacteria lysosome
Small bumps located on portions of the endoplasmic
reticulum ribosomes
Provides temporary storage of food, enzymes and waste
products vesicle
Firm, protective structure that gives the cell its shape in
plants, fungi, most bacteria and some protests cell wall
Produces a usable form of energy for the cell mitochondria
Packages proteins for transport out of the cell Golgi body
Everything inside the cell including the nucleus cytosol
Site where ribosomes are made nucleolus
The membrane surrounding the cell plasma membrane
Provides support for the cell, has two “subparts” Lipid bilayer
Name for the collection of DNA in the nucleus of eukaryotic cells Chromosome/chromatin
According to the passage, when lymph nodes swell, it is often a sign that
A
B
C
D
your skin fought off pathogens that tried to enter your body.
BACK
your body is fighting against germs that it thinks are invaders.
your level of lymph is low and so the body is working hard.
your body is not producing enough lymphocytes.
Answer:lymph nodes are located in several parts of body to help fight against pathogens.
Explanation:
they contain immune cells that can help fight infection by attacking or destroying germs that are carried in through the lymph fluid.
Simple cuboidal epithelia are usually found in areas where secretion and absorption occur. True or false?.
The statement is true that simple cuboidal epithelia are usually found in areas where secretion and absorption occur.
Simple cuboidal epithelia consists if a single layer of cells that are almost equal in length and breadth. The layer consists of various glands and ducts that aid in the process of secretion and absorption. Besides, it also acts to protect the skin and other organs by lining them.
Secretion is the process of releasing some substance from any gland or organ inside the body. It is not necessary that the substance to be secreted is synthesized in the same organ from where it is secreted. The various secretions inside human body are; mucus, digestive juices, hormones, etc.
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Some internal environmental factors may interfere with the ability of an enzyme to function efficiently. Explain why changing the shape of an enzyme could affect the ability of the enzyme to function.
Answer:
internal environmental factors affect the ability of an enzyme to function efficiently.
Explanation:
if the shape changes, it will not fit with the same substrate.the enzymes no longer fits with the molecule with which it is interacted before.shape determines function.
During photosynthesis, where do sugars like glucose eventually form in a plant cell?
Choose 1 answer:
(Choice A)
Chloroplast; thylakoid membrane
(Choice B)
Mitochondrion; stroma
(Choice C)
Chloroplast; grana
(Choice D)
Chloroplast; stroma
Answer:
(Choice C)
Chloroplast; grana
Explanation:
Help please. Image is attached , Thanks!
Answer:
9. 2,240
10.272
11.6%
12.40g
13.24g
Explanation:
serving size is one oz so take serving size x how many ounces your told to eat= answer
Which of the following is not true about cells?
Which of the following is not true about cells?
All living cells always come from other living cells.
All living thing begins life as a single cell.
It takes many cells to make a living organism.
The cell is the basic unit of the structure and function of life.
Answer:
all living thing begins life as a single cell is false statement
Endocytosis is the process of taking vesicles into the cell using?
Answer: Endocytosis
Explanation: the process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane, and bringing it into the cell. Exocytosis describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell.
hope this helps
(f) A man has a head injury.
He staggers and sways as he walks.
Suggest which part of his brain has been damaged.
Answer:
CerebellumThe cerebellum is primarily responsible for muscle control, including balance and movement. It also plays a role in other cognitive functions such as language processing and memory.
Anyone know? The correct answer!!
Answer:
Carbon dioxide water and energy
Which geographic distribution is a result of a limit of resources and equally separated individuals where they keep their own space?
A. clustered
B. random
C. clumped
D. uniform
A uniform distribution is a result of limit of resources and equally separated individuals where they keep their own space.
What is an uniform distribution?Basically, an uniform distribution refers to the natural arrangement and apportionment of the various forms of animals and plants in the different regions and localities of the earth. The basic types of population distribution within a regional range are uniform, random, and clumped distribution.
The individuals of a population are spaced in different ways which is called dispersion patterns but in an uniform dispersion, the individuals are evenly spaced. Therefore, the uniform distribution is a result of limit of resources and equally separated individuals where they keep their own space. Therefore, the Option D is correct.
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PLEASE ANSWER SOON BIO HW, real answers only thanks
The reactants of hydrolysis are triglycerides, polypeptides, DNA and RNA, and polysaccharides
The products of hydrolysis are fatty acids, glycerol, monosaccharides, nucleotides, and amino acids.Understanding the reactants and products of hydrolysis.It follows that whenever water molecule reacts with a macromolecule, the water molecule breaks and its bond splits to form a union with another chemical species. These species which are mentioned above are macromolecules which are also reactants involved in hydrolysis.
Generally, in hydrolysis, smaller molecules are generated from large and complex molecules by breaking the bonds that join them.
Hydrolysis is if economic importance simply because it helps in digestion of food substances.
In conclusion, the macromolecules such as polypeptides, polysaccharides and others are involved in hydrolytic reactions.
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A biologist discovers a new signal transduction pathway in fruit flies that involves a protein kinase cascade. As part of a grant proposal he writes to obtain funding for further work on this pathway, the biologist proposes research to look for phosphatase enzymes. Why?.
In familial hypercholesterolemia, individuals with two abnormal alleles die of heart attacks in childhood, those with only one abnormal allele typically die as young adults, and those with two normal alleles have normal life expectancies. This exemplifies __________.
In familial hypercholesterolemia, individuals with two abnormal alleles die of heart attacks in childhood, those with only one abnormal allele typically die as young adults, and those with two normal alleles have normal life expectancies. This exemplifies C. incomplete dominance
In the field of genetics, the phenomenon of incomplete dominance can be described as the one in which the dominant allele does not have the ability to completely mask the recessive allele. As a result, an intermediate species is formed that is different from both the homozygous dominant and homozygous recessive types.
In familial hypercholesterolemia, incomplete dominance is shown by young adults who have one healthy and one abnormal allele. As a result, these young adults are able to survive till a young age. On the contrary, the individuals with both abnormal alleles die during childhood and those with both normal alleles live a normal life.
Although a part of your question is missing, you might be referring to this question:
In familial hypercholesterolemia, individuals with two abnormal alleles die of heart attacks in childhood, those with only one abnormal allele typically die as young adults, and those with two normal alleles have normal life expectancies. This exemplifies __________.
A. penetrance
B. codominance
C. incomplete dominance
D. complete dominance
E. pleiotropy
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Cellular respiration is an exothermic reaction and photosynthesis is an endothermic reaction. How does the required activation energy compare for these two reactions?
Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Answer:
I think it is either a or c
Explanation:
What is the benefit of asexual reproduction
Benefits of asexual reproduction involve: the biological female only needs one guardian, themselves. You'll be more efficient with your time and energy because they don't need a companion.
Skeletal and cardiac muscle cells store calcium in extensive networks of which organelle?.
Skeletal and cardiac muscle cells store calcium in extensive networks of smooth ER.
Cardiac muscles are those that build up the heart. These muscles have the ability of auto-rhythmicity. Thus means that they can perform movements on their own. Cardiac muscles are also called involuntary muscles, because they do not move according to the wish of the individual.
Smooth ER is the one that does not have ribosomes attached on its surface. It acts as a reservoir for storing the calcium ions inside the cell. These calcium ions are transported to the cell organelle by active transport and release by the signals of hormones.
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You start with 100 units of protein activity and 100 grams of total protein. After the first centrifugation step, you have 15% less activity and 80% less total protein. What is your fold-purification of the target protein?.
Fold-purification of the target protein is mathematically given as
Fold= 4.25
This is further explained below.
What is your fold-purification of the target protein?.Generally, the equation for Specific activity is mathematically given as
x= Activity (units)/Protein (mg)
Therefore
X= 100/100000
X= 0.001
After centrifugation
X'= 85/20000
X'= 0.00425
Generally, the equation for Fold is mathematically given as
[tex]Fold= \frac{x'}{x}[/tex]
Fold= 0.00425/0.001
Fold= 4.25
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The word helix means spiral. what does this tell you about the structure of dna, which is a double helix macromolecule?
The DNA is double helix macromolecule, that means it has two strands of spirals joined together by hydrogen bonds.
DNA is the Deoxyribonucleic Acid. It is the main genetic material present in the majority of the organisms. The double helix are joined together by hydrogen bonds, giving the DNA a spiral staircase like appearance. These two strands are anti-parallel in nature.
Hydrogen bonds are the non-covalent bonds. These are usually intermolecular bonds, however they can be intramolecular as well. The bond is formed between one hydrogen atom and another electronegative atom of some other molecule, like fluorine, oxygen or nitrogen.
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in determining their composition, they were told they are polypetides formed into sphercal shapes which were mostly soluble in water. they concluded that these antibodies were
In determining their composition, they were told they are polypetides formed into sphercal shapes which were mostly soluble in water. they concluded that these antibodies were globular protiens.
What is globular protiens?The term "globular protein" is fairly old (dating likely from the 19th century) and is now somewhat obsolete given the hundreds of thousands of proteins and more sophisticated and descriptive structural motif vocabulary. Only by using ultracentrifuges or dynamic light scattering techniques can the globular nature of these proteins be identified without the use of contemporary methods.
By virtue of the protein's tertiary structure, the spherical structure is induced. Apolar (hydrophobic) amino acids are bonded inside the molecule, whereas polar (hydrophilic) amino acids are bound outside. This allows for dipole-dipole interactions with the solvent, which explains why the molecule is soluble.
The free energy released when a protein folds into its native shape is relatively low, which makes globular proteins only weakly stable.
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